Pith Number

pith:IU4447AK

pith:2026:IU4447AKLNPI65CCNWQHFVAKWY

not attested not anchored not stored refs pending

Metamorphic Testing of Transpilers via Mutation Consistency of Programs

Enea Raffaele Ilario Papaleo, Giovanni Denaro, Luca Guglielmo

arxiv:2607.29247 v1 · 2026-07-31 · cs.SE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IU4447AKLNPI65CCNWQHFVAKWY}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-08-03T01:22:26.758811Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4539ce7c0a5b5e8f74426da072d40ab62678a0a3345bc5812a5246d45e066f64

Aliases

arxiv: 2607.29247 · arxiv_version: 2607.29247v1 · doi: 10.48550/arxiv.2607.29247 · pith_short_12: IU4447AKLNPI · pith_short_16: IU4447AKLNPI65CC · pith_short_8: IU4447AK

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/IU4447AKLNPI65CCNWQHFVAKWY \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 4539ce7c0a5b5e8f74426da072d40ab62678a0a3345bc5812a5246d45e066f64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2cdbde9a902762a9d6001eaf3b3be2fcfd7e32e76d2b1841f98ce6fbd467ad0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2026-07-31T10:20:08Z",
    "title_canon_sha256": "0fa3cdb36166d680875df4d99b52a4b8b9ec780e801b632c1300c8f9aeb69d57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.29247",
    "kind": "arxiv",
    "version": 1
  }
}